From 3fc2aa5522ab958374d93ef5d2e12df7ee233c91 Mon Sep 17 00:00:00 2001
From: Michal Sojka <sojka@merica.cz>
Date: Wed, 24 Sep 2014 22:43:18 +0200
Subject: [PATCH] usb: gadget: Introduce usb_gadget_giveback_request()
All USB peripheral controller drivers call completion routines directly.
This patch adds usb_gadget_giveback_request() which will be used instead
of direct invocation in the next patch. The goal here is to have a place
where common functionality can be added.
Signed-off-by: Michal Sojka <sojka@merica.cz>
Acked-by: Felipe Balbi <balbi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/gadget/udc/udc-core.c | 16 ++++++++++++++++
include/linux/usb/gadget.h | 8 ++++++++
2 files changed, 24 insertions(+)
diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index ad1ceac154682..16d3f6fedd1c8 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -106,6 +106,22 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
/* ------------------------------------------------------------------------- */
+/**
+ * usb_gadget_giveback_request - give the request back to the gadget layer
+ * Context: in_interrupt()
+ *
+ * This is called by device controller drivers in order to return the
+ * completed request back to the gadget layer.
+ */
+void usb_gadget_giveback_request(struct usb_ep *ep,
+ struct usb_request *req)
+{
+ req->complete(ep, req);
+}
+EXPORT_SYMBOL_GPL(usb_gadget_giveback_request);
+
+/* ------------------------------------------------------------------------- */
+
static void usb_gadget_state_work(struct work_struct *work)
{
struct usb_gadget *gadget = work_to_gadget(work);
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h
index d18811433324b..522cafe26790b 100644
--- a/include/linux/usb/gadget.h
+++ b/include/linux/usb/gadget.h
@@ -1023,6 +1023,14 @@ extern void usb_gadget_udc_reset(struct usb_gadget *gadget,
/*-------------------------------------------------------------------------*/
+/* utility to give requests back to the gadget layer */
+
+extern void usb_gadget_giveback_request(struct usb_ep *ep,
+ struct usb_request *req);
+
+
+/*-------------------------------------------------------------------------*/
+
/* utility wrapping a simple endpoint selection policy */
extern struct usb_ep *usb_ep_autoconfig(struct usb_gadget *,
--
2.30.2